No health-based violations on EPA record since 2016.
Serves about 5,907 people (1,969 connections) with groundwater from its own wells.
From EPA's record for TX2120009. PurityMap is independent of Dean WSC.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2025 to July 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-20 to 2025-07-22 | UCMR5 Analytical Results: DEAN WSC (TX2120009) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Dean WSC's phone number on EPA record is 903-597-2817. Its mailing address is PO BOX 4695, TYLER, TX 75712-4695.
According to EPA's record, Dean WSC uses groundwater from its own wells.
No health-based violations on EPA record since 2016. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Dean WSC's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Dean WSC. Its phone number on EPA record is 903-597-2817. Its mailing address on EPA record is PO BOX 4695, TYLER, TX 75712-4695. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.